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4-Hydroxy-3-nitrobenzoic acid

5-Hydroxy-2-nitrobenzoic acid

3-Hydroxy-2-nitrobenzoic acid

4-Hydroxy-3-nitrobenzaldehyde

5-Hydroxy-2-nitrobenzaldehyde

3-Hydroxy-4-nitrobenzaldehyde

4-Hydroxy-3-nitroacetophenone

6-Hydroxynicotinic acid

4-Hydroxynicotinic acid

2-Hydroxynicotinic acid